NAD L 54 owner manual Reference, Troubleshooting, Condition

				Reference
				TROUBLESHOOTING
CONDITION		POSSIBle CAuSES		POSSIBle SOLutionS
No sound from all channels.	• AC power unplugged.		• Check AC cable connection and outlet.
	• Power not switched on.
	•	Outlet has no power.
No sound from some channels.	•	Faulty/missing cables.	•	Check cables.
	•	’LEFT” or “RIGHT” channel at “Audio Mode” set	•	Check ‘Audio Mode” menu for Left or Right
		to “-80”.		channel.
	•	Power-amp or speaker-connections faulty.	•	Check power amp, cabling, and speakers.
No sound at SRS ON.	• SRS set to “OFF” at “AUDIO MODE” setting		• Set SRS to ON at “AUDIO MODE” setting .
No sound from Subwoofer.	•	Subwoofer is off, not powered or improperly	•	Power-up subwoofer, check Sub’s AC outlet
		connected.		or check connections.
	•	Sub level set too low -12.	•	Correct subwoofer level by adjusting “SUB”
				button at HTR 4.
L 54 does not respond to HTR 4 remote	•	Batteries are flat or incorrectly inserted.	•	Check batteries.
control.
	•	IR transmitter window on remote or IR	•	Check IR windows and ensure clear line-of-
		receiver window on L 54 is obstructed.		sight from remote to L 54.
	• L 54 front panel is in very bright sunlight or		•	Reduce sunlight/room lighting.
		ambient light.
L 54 does not respond to front panel	•	Microprocessor error.	• Power-down the L 54 via the front panel Power
commands or remote control.				switch and unplug it from the AC outlet.
	•	L 54 may have over heated.	• Wait five minutes, re-connect and power up.
The POWER is ON, but the internal DVD	•	No disc is inserted.	•	Insert a disc (Check that the DVD or, audio CD
player does not work.				indicator in the display is illuminated).
No picture.	•	The TV is not set to receive DVD signal.	• Select the appropriate video input mode
				on the TV so that the picture from the L 54
				appears on the TV screen output.
	•	The video cable is not connected securely.	•	Connect the video cable into the jacks
				securely.
	• The connected TV power is turned off.		• Power on the TV.
The playback picture is poor.	•	The disc is dirty.	•	Clean the disc.
The internal DVD player does not start	•	No disc is inserted.	•	Insert a disc (Check that the DVD or audio CD
playback.				indicator in the DVD display is lit).
	•	An unplayable disc is inserted.	•	Insert a playable disc (Check the disc type
				colour system and Regional code).
	•	The disc is placed upside down.	•	Place the disc with the playback side down.
	•	The disc is not placed within the guide.	•	Place the disc correctly inside the guide on
				the disc tray .
	• A menu is on the TV screen.		• Press SETUP/MEMORY to turn off the menu
				screen.
	• The disc is dirty.		•	Clean the disc.
Parental Control cannot be changed.	• The password entered was wrong.		• Enter the correct password.
	•	Password was forgotten.	• Set the L 54 to factory default settings:
				1. Place the L 54 into AM mode
				2. Press quickly the three front panel buttons;
				“PLAY/PAUSE” then “STOP/OPEN” then “DISPLAY,’
				holding the “DISPLAY” button for more than
				7 seconds. The L 54 will switch itself off then
				back on to DVD mode.
			•	Note: Default password is 1234.

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